CN213630972U

CN213630972U - Compact low-nitrogen condensation hot water boiler

Info

Publication number: CN213630972U
Application number: CN202022007059.7U
Authority: CN
Inventors: 陈元元; 何帅; 李森; 李跃龙; 杨俭; 邢国俊
Original assignee: Fangkuai Boiler Co ltd
Current assignee: Fangkuai Boiler Co ltd
Priority date: 2020-09-15
Filing date: 2020-09-15
Publication date: 2021-07-06
Anticipated expiration: 2030-09-15

Abstract

The utility model provides a low nitrogen condensation boiler of compact, includes the stove courage, the front end of many heat exchange tubes is connected on the stove courage back wall, and the rear end is connected on the flue, the heat exchange tube be the wing pipe, during the flue gas got into the flue from the stove courage through the wing pipe, be connected with the condenser behind the flue, install many heat transfer water pipes in the condenser, the intaking of heat transfer water pipe is linked together with the water inlet of condenser, the play water of heat transfer water pipe is linked together with the delivery port of condenser, the delivery port of condenser is connected to the water inlet of boiler, the water inlet of boiler is located the top rear, the delivery port of boiler is located. The utility model discloses a low nitrogen condensation hot water of compact through at the internal rational arrangement heat transfer component of furnace, improves the thermal efficiency of boiler, reduces the gas volume.

Description

Compact low-nitrogen condensation hot water boiler

Technical Field

The utility model relates to a boiler, concretely relates to energy-conserving, environmental protection's a low nitrogen condensation hot water gas boiler of compact.

Background

The existing traditional oil-gas and gas-fired normal-pressure hot water boiler is mostly composed of a burner, a boiler furnace, a heat exchange element and a boiler shell, wherein the burner ignites fuel and provides sufficient air, and the ignited fuel and air are combusted in the boiler furnace to release a large amount of heat and transfer the heat to a medium water medium in the boiler shell through heating surfaces such as the heat exchange element and the like. The heat exchange area of the heat exchange elements of this type of boiler directly affects the heat exchange efficiency of the boiler. Meanwhile, the traditional fuel oil and gas normal-pressure hot water boiler mostly adopts an atmospheric or diffusion type combustion device, the combustion efficiency is low, the NOx emission is high, and the exhaust gas temperature is generally more than 150-180 ℃; the heat of the flue gas after the combustion of the boiler is lack of deep utilization, which causes great waste of clean energy of petroleum and natural gas and also aggravates environmental pollution to a certain extent. The condensing boiler with efficient combustion and deep flue gas utilization is adopted in the natural gas utilization equipment system, the combustion efficiency of petroleum and natural gas can be improved, the NOx emission can be reduced, meanwhile, the exhaust gas temperature of the equipment is reduced to be lower than the dew point temperature (or water dew point) of the flue gas, not only can the sensible heat of the exhaust gas be recycled, but also a large amount of latent heat of vaporization released when water vapor generated during combustion of the natural gas is condensed can be utilized, the energy is saved, and meanwhile, the condensing liquid can be used for CO in the flue gas₂And harmful gases such as NOx, SOx and the like also have certain absorption effect. Therefore, the development and application of the petroleum and natural gas condensing boiler is one of the most effective ways for efficiently utilizing petroleum and natural gas and reducing environmental pollution. According to the arrangement type, the normal pressure hot water boiler is mainly divided into a vertical type and a horizontal type. In contrast, the vertical hot water boiler saves space and has relatively low cost; the common horizontal hot water boiler occupies a large area, so the cost is relatively high, and in order to provide market competitiveness, high-efficiency heat exchange elements and the heat exchange tubes are requiredThe floor area of the horizontal hot water boiler is reduced by the high-efficiency combustion device. The existing market gradually shows a normal-pressure horizontal integrated condensing hot water boiler, but a central back-burning type boiler, a larger smoke transfer chamber and a condenser are arranged at the top of the boiler, the structure of the central back-burning type boiler inevitably leads to the increase of the specific area of the boiler body, and the condenser arranged at the top leads to the increase of the height of the whole boiler body, the size is increased, and the transportation is inconvenient.

Disclosure of Invention

An object of the utility model is to overcome the above-mentioned problem that exists in present horizontal hot-water boiler, provide a low nitrogen condensation boiler of compact.

In order to realize the purpose of the utility model, the following technical proposal is adopted: the utility model provides a low nitrogen condensation boiler of compact, includes the stove courage, the front end of many heat exchange tubes is connected on the stove courage back wall, and the rear end is connected on the flue, the heat exchange tube be the wing pipe, during the flue gas got into the flue from the stove courage through the wing pipe, be connected with the condenser behind the flue, install many heat transfer water pipes in the condenser, the intaking of heat transfer water pipe is linked together with the water inlet of condenser, the play water of heat transfer water pipe is linked together with the delivery port of condenser, the delivery port of condenser is connected to the water inlet of boiler, the water inlet of boiler is located the top rear, the delivery port of boiler is located.

Further, the method comprises the following steps of; the heat exchange water pipe is a steel-aluminum composite spiral finned pipe.

Further, the method comprises the following steps of; the smoke outlet of the condenser is positioned at the rear part, and a chimney is arranged on the smoke outlet.

Further, the method comprises the following steps of; the condensed water outlet of the condenser is positioned at the rear part, and the end part of the water inlet pipe of the condenser is positioned at the rear part.

Further, the method comprises the following steps of; the inner diameter of the furnace pipe is 470-800mm, and the length is 193-465mm

The utility model discloses an actively beneficial technological effect lies in: the exhaust gas temperature of the body of the common normal-pressure condensation hot water boiler is generally 200-250 ℃, and the final exhaust gas temperature can be reduced to about 90-100 ℃ after convection heat exchange by the condenser arranged at the tail part. The utility model discloses a low nitrogen condensation hot water of compact, through at the internal rational arrangement heat exchange element of furnace, wing pipe is adopted to this part of body, can reduce the boiler body to 150 and give up with money 160 ℃ with discharging fume, adopts the spiral finned tube in the condenser of rear end, realizes that final exhaust gas temperature can reach 45 ℃ at minimum. Through a plurality of tests, the heat exchange element arrangement mode can enable the boiler to be the most compact, and the water dew point in the flue gas can be known to be generally 55-60 ℃ according to the water vapor partial pressure coefficient. Therefore, the condensation hot water boiler can generate a large amount of condensed water, the highest condensation rate of the flue gas can reach 33%, the heat loss of the flue gas discharged from the tail part of the boiler body is reduced, a large amount of sensible heat of the flue gas at the tail part is utilized, and the latent heat of vaporization released by the flue gas is greatly absorbed, so that the heat efficiency of the boiler is improved, and the gas quantity is reduced. Meanwhile, the condensed water can absorb the discharge amount of harmful gases of SOx and NOx, which is more beneficial to environmental protection and improves the environmental quality. All the pipe orifices (a water inlet, a water outlet, a condensation water port, a smoke exhaust port and a boiler blow-off port) of the furnace body are uniformly arranged at the tail part of the furnace body, so that a user can conveniently carry out integrated connection.

Drawings

Fig. 1 is a schematic side view of the present invention.

Fig. 2 is a schematic view of the rear view of the present invention (direction K in fig. 1).

Detailed Description

In order to explain the utility model more fully, the utility model provides an implementation example. These examples are merely illustrative of the present invention and do not limit the scope of the present invention.

The invention is explained in further detail with reference to the drawings, in which the reference symbols are: 1: a furnace pipe; 2: wing pipes; 3: a flue; 4: a condenser; 5: a heat exchange water pipe; 6: a water inlet of the condenser; 7: a water outlet of the condenser; 8: a water inlet of the boiler; 9: a water outlet of the boiler; 10: a water outlet pipe; 11: a blow-off pipe; 12: a condensed water outlet; 13: a chimney; 14: the end part of the water inlet pipe of the condenser;

as shown in the attached drawings, the compact low-nitrogen condensation hot water boiler comprises a boiler furnace 1, wherein the front ends of a plurality of heat exchange tubes are connected to the rear wall of the boiler furnace, the heat exchange tubes are wing tubes 2 which can adopt the combination of one or more schemes of patent application numbers 201821927539.1, 201821927539.1 and 201821927284.9 of the applicant, the rear ends of the wing tubes are connected to a flue 3, flue gas enters the flue from the boiler furnace through the wing tubes, a condenser 4 is connected to the rear of the flue, a plurality of heat exchange water tubes 5 are arranged in the condenser, the heat exchange water tubes are steel-aluminum composite spiral finned tubes, the water inlet of the heat exchange water tubes is communicated with a water inlet 6 of the condenser, the water outlet of the heat exchange water tubes is communicated with a water outlet 7 of the condenser, the water outlet of the condenser is connected to a water inlet 8 of the boiler, the water inlet 8 of the boiler is positioned at the rear part of the top part, the water outlet, the end part of the water outlet pipe is positioned at the rear part of the boiler, and the bottom of the boiler is provided with a sewage discharge pipe 11; the smoke outlet of the condenser is positioned at the rear part, and a chimney 13 is arranged on the smoke outlet. The condensed water outlet 12 of the condenser is arranged at the rear part, the water inlet pipe end part 14 of the condenser is arranged at the rear part, and the water inlet pipe of the condenser is connected with the water inlet of the condenser.

The flat burner can be used with the furnace pipe in the application.

After the embodiments of the present invention have been described in detail, those skilled in the art can clearly understand that various changes and modifications can be made without departing from the scope and spirit of the above claims, and any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention all fall within the scope of the technical solution of the present invention, and the present invention is not limited to the embodiments of the examples given in the specification.

Claims

1. The utility model provides a low nitrogen condensation boiler of compact, includes the stove courage, its characterized in that: the front ends of the heat exchange tubes are connected to the rear wall of the furnace pipe, the rear ends of the heat exchange tubes are connected to the flue, the heat exchange tubes are wing tubes, flue gas enters the flue from the furnace pipe through the wing tubes, a condenser is connected behind the flue, a plurality of heat exchange water tubes are installed in the condenser, the water inlet of each heat exchange water tube is communicated with the water inlet of the condenser, the water outlet of each heat exchange water tube is communicated with the water outlet of the condenser, the water outlet of the condenser is connected to the water inlet of the boiler, the water inlet of the boiler is located at the rear of the top, and.

2. A compact low nitrogen condensing hot water boiler according to claim 1, characterized in that: the heat exchange water pipe is a steel-aluminum composite spiral finned pipe.

3. A compact low nitrogen condensing hot water boiler according to claim 1, characterized in that: the smoke outlet of the condenser is positioned at the rear part, and a chimney is arranged on the smoke outlet.

4. A compact low nitrogen condensing hot water boiler according to claim 1, characterized in that: the condensed water outlet of the condenser is positioned at the rear part, and the end part of the water inlet pipe of the condenser is positioned at the rear part.

5. A compact low nitrogen condensing hot water boiler according to claim 1, characterized in that: the inner diameter of the furnace pipe is 470-800mm, and the length is 193-465 mm.